what energy transformation takes place in a solar cooker

What energy transformation takes place in solar cooking?

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Mar 14, 2016
Convection or conduction
by: Jim La Joie

On oven heats the air within it. The transfer of heat from the source (gas flame, electric coil) through the air is known as convection.
When heat transfers through a solid material without an intermediary matter, that is known as conduction. In a panel type solar cooker the heat from the dark colored pot is conducted to the food as hot always moves to cold.
Same for a parabolic.
Box ovens work more like your home oven. Although there is some conduction most of the heat is transferred from the hot oven walls via convection.

Jun 04, 2014
Light energy is changed to heat energy
by: Jim La Joie

Energy is never created or destroyed, only changed.
In solar cooking, light energy is absorbed by a dark colored surface. This absorption excites the molecules of the dark surface. Excited molecules are hot molecules.
The nature of all matter is to lose its heat. The hot molecules begin to slow and their slowing releases heat into the 1. Food in the pot if using a dark pot or 2. Air in the cooking chamber if using an oven type of solar cooker.

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